EP 2109954 A1 20091021 - ACK PRIORITIZATION IN WIRELESS NETWORKS
Title (en)
ACK PRIORITIZATION IN WIRELESS NETWORKS
Title (de)
ACK-PRIORISIERUNG IN DRAHTLOSEN NETZEN
Title (fr)
ÉTABLISSEMENT DE PRIORITÉS D'ACCUSÉS DE RÉCEPTION DANS DES RÉSEAUX SANS FIL
Publication
Application
Priority
- EP 2007060443 W 20071002
- US 54251406 A 20061002
Abstract (en)
[origin: WO2008040725A1] An improved acknowledgement (ACK) prioritization scheme is disclosed that provides ACKs with a lower block error rate (BLER) (as opposed to data) over an air interface, provides a separate radio bearer for ACKs, and successively increases the priority of ACKs for each retransmission required. A lower BLER target for ACKs may be achieved by an increase in transmit (Tx) power, additional coding for the radio bearer, or the use of diversity or hybrid automatic repeat request (ARQ) schemes. After packets are identified as either data or an ACK, they are sent to separate Tx buffers over separate radio bearers. Because the ACKs are transmitted over separate bearers and Tx buffers as compared to the data, ACKs are never queued behind the data, and are effectively prioritized as compared to the data. When retransmissions are required for an ACK packet, the scheduling prioritization is increased successively for each ACK retransmission required.
IPC 8 full level
H04L 1/18 (2006.01)
CPC (source: EP US)
H04L 1/1854 (2013.01 - EP US); H04L 2001/125 (2013.01 - EP US)
Citation (search report)
See references of WO 2008040725A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008040725 A1 20080410; EP 2109954 A1 20091021; EP 2109954 B1 20130227; ES 2402828 T3 20130509; US 2008080464 A1 20080403; US 9049017 B2 20150602
DOCDB simple family (application)
EP 2007060443 W 20071002; EP 07820825 A 20071002; ES 07820825 T 20071002; US 54251406 A 20061002